What is the definition of parallel sentence?
Parallel structure is the consistent usage of one particular form of writing in a sentence.
He likes to read, eat, and sleep.
Amy wants to bathe and eat.
"I come to bury Caesar, not to praise him." -William Shakespeare, Julius Caesar Act III, Scene II.
Not parallel sentences:
She is smart, demonstrates leadership, and plays the flute.
Cora wants to hike, and she doesn't like reading.